Finding the Fourth Proportional to 465,705.54, 697,973.94 and 199,152.72

Step by Step Solution

1. Step 1: Write the proportion equation
   465,705.54 : 697,973.94 = 199,152.72 : x
2. Step 2: Convert to fraction form
   465,705.54/697,973.94 = 199,152.72/x
3. Step 3: Cross multiply
   465,705.54x = 697,973.94 × 199,152.72
4. Step 4: Simplify right side
   465,705.54x = 139,003,408,640.12
5. Step 5: Solve for x
   x = 139,003,408,640.12/465,705.54
6. Step 6: Final answer
   x = 298,479.18